Home Web Front-end HTML Tutorial html&css中的文字对齐问题 - 林七七

html&css中的文字对齐问题 - 林七七

May 21, 2016 am 08:35 AM

html&css的使用过程中,我们经常会遇到很多文字对齐问题。下面我要介绍一个有丁点难的文字对齐问题。
实现效果如下图所示。
 
两行长度不定的文字,要让它们总体水平居中,然后,这两行字要左对齐,如下图所示。
听起来好像挺简单,然而实现起来却。。。。。。
 
错误做法一:
用一个大块div包住两个div,在大div中设置"text-align:center; ",在小div中设置"text-align:left; "
结果如下图所示。
因为div会占据一整行,而不能随内容大小自动调节宽度,如果要对大div设置width,这也不好控制,因为万一文段长度改变,那么还是无法实现居中。
 
错误做法二:
于是我把小div改成span,因为span是行内元素,能随span内的文段宽度来调节自身宽度。结果如下图所示。
因为span自动调节自身宽度(即span宽度等于文段长度),所以"text-align:left; "对它不起作用。
 
正确做法:
既然块级元素和行内元素都无法实现该效果,那能否折中采取介于它们之间的元素。
对,就是设置"display:inline-block;"。
效果图如下:
思路:在一个大div中放置一个小div,小div中包含2个span文段。大div设置"text-align:center; ",让小div居中; 小div设置"display:inline-block;",这样小div就能有行内元素的特性,会根据内容自动调节自己的宽度,再设置"text-align:left; ",让其中的元素左对齐,这样就搞定了。
Tip:小div中的span元素可替换为div等块级元素,小div可替换为span等行内元素。
 
html代码如下:
<span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="container"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="child-container"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="text"</span><span style="color: #0000ff;">></span>请尽快付款以保证商家能及时提供服务<span style="color: #0000ff;"></span><span style="color: #800000;">span</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">/></span>
        <span style="color: #0000ff;"><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="text"</span><span style="color: #0000ff;">></span>未支付订单将在半个小时后关闭<span style="color: #0000ff;"></span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span></span></span></span>
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html代码
 
css代码如下:
<span style="color: #008080;"> 1</span> <span style="color: #800000;">*</span>{
<span style="color: #008080;"> 2</span> <span style="color: #ff0000;">    margin</span>:<span style="color: #0000ff;"> 0</span>;
<span style="color: #008080;"> 3</span> <span style="color: #ff0000;">    padding</span>:<span style="color: #0000ff;"> 0</span>;
<span style="color: #008080;"> 4</span> }
<span style="color: #008080;"> 5</span> <span style="color: #800000;">#container </span>{
<span style="color: #008080;"> 6</span> <span style="color: #ff0000;">    text-align</span>:<span style="color: #0000ff;"> center</span>;
<span style="color: #008080;"> 7</span> <span style="color: #ff0000;">    background-color</span>:<span style="color: #0000ff;"> #DBEDFD</span>;<span style="color: #ff0000;">   //这三句只是为了美观,请忽略。。。
</span><span style="color: #008080;"> 8</span> <span style="color: #ff0000;">    height</span>:<span style="color: #0000ff;"> 40px</span>;
<span style="color: #008080;"> 9</span> <span style="color: #ff0000;">    padding</span>:<span style="color: #0000ff;"> 15px 0</span>;
<span style="color: #008080;">10</span> }
<span style="color: #008080;">11</span> <span style="color: #800000;">#child-container </span>{
<span style="color: #008080;">12</span> <span style="color: #ff0000;">    text-align</span>:<span style="color: #0000ff;"> left</span>;
<span style="color: #008080;">13</span> <span style="color: #ff0000;">    display</span>:<span style="color: #0000ff;"> inline-block</span>;
<span style="color: #008080;">14</span> }
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CSS代码

 

 
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